Product classification
HS code for Water wheel parts: 8410.90
Turbines, parts of hydraulic turbines and water wheels, including regulators.
Classification of water wheel parts under HS 8410.90
HS code 8410.90 is designated for the parts of hydraulic turbines and water wheels, including regulators. According to Note 2 to Section XVI of the Harmonized System, parts that are suitable for use solely or principally with a particular kind of machine are to be classified with those machines. Therefore, components specifically engineered for the water wheels described in heading 8410 are captured here. This includes the structural and functional elements that allow the wheel to capture hydraulic energy or control the flow of water. The inclusion of "regulators" in the heading text is significant, as it covers the mechanical or electronic devices used to control the speed or water intake of the turbine or wheel. Classification under 8410.90 requires that the part is not more specifically described elsewhere in the nomenclature. For example, a general-purpose valve would be classified under 8481, even if intended for a water wheel. The technical documentation must often prove that the part is dedicated to hydraulic machinery to satisfy customs authorities. This code is essential for maintaining and repairing existing hydroelectric infrastructure, ensuring that specialized components like custom-cast buckets or precision-engineered rotors are correctly identified for duty and regulatory purposes.
- Covers
- Water wheel buckets and vanes
- Rotors for hydraulic turbines
- Stators for hydraulic turbines
- Hydraulic turbine regulators
- Casings for water wheels
- Wicket gates for flow control
- Impellers for hydraulic machinery
- Also under 8410.90
- Voith Hydro turbine parts
- Andritz Hydro replacement components
- GE Renewable Energy hydro turbine spares
- Woodward governors
Codes often confused with 8410.90
Common mistake. Parts are often misclassified under 8483 if they are transmission elements like shafts, gears, or bearing housings, as these have their own specific heading. Another common mistake is using 7326 (other articles of iron or steel) for simple metal components; however, if the part is identifiable as a component of a water wheel, 8410.90 is legally required. Electronic control systems not integrated with a mechanical regulator might be misclassified under 9032.
Top exporters and importers of HS 841090 (the code used for water wheel parts), 2025
In 2025, the largest exporter of HS 841090 (the code used for water wheel parts) in UN Comtrade data was China, with 28% of world exports; the largest importer in UN Comtrade data was the United States, with 7.2% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Figures cover everything classified under HS 841090, not only water wheel parts.
Top exporters 2025 · share of world exports
- 1 China $247M 28% of world exports
- 2 Italy $98M 11% of world exports
- 3 Czechia $73M 8.4% of world exports
World total: $868M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 United States $58M 7.2% of world imports
- 2 Angola $54M 6.7% of world imports
- 3 Austria $48M 5.9% of world imports
World total: $809M Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries that did not report are estimated from what other countries recorded trading with them. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM code for water wheel parts
Brazil classifies water wheel parts under NCM 8410.90.00: HS 8410.90 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about water wheel parts
What is the HS code for Water wheel parts?
The HS code for Water wheel parts is 841090 (Turbines; parts of hydraulic turbines and water wheels, including regulators). The HS code for parts of hydraulic turbines and water wheels, including regulators, is 8410.90.
How do I classify Water wheel parts for customs?
Water wheel parts is classified under HS code 841090 — Turbines; parts of hydraulic turbines and water wheels, including regulators. This is a 6-digit subheading level code.
Are bearings for water wheels classified here?
No, ball or roller bearings are specifically classified under heading 8482, regardless of their intended use in a water wheel.
Which countries are the top exporters of water wheel parts (HS 841090)?
In 2025, the top exporters of HS 841090 (the code used for water wheel parts) in UN Comtrade data were China ($247M, 28% of world exports), Italy ($98M) and Czechia ($73M). World exports came to about $868M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Which countries are the top importers of water wheel parts (HS 841090)?
In 2025, the top importers of HS 841090 (the code used for water wheel parts) in UN Comtrade data were the United States ($58M, 7.2% of world imports), Angola ($54M) and Austria ($48M). World imports came to about $809M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Is the HS code for Water wheel parts the same in all countries?
The base HS code 841090 for Water wheel parts is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.
What is the NCM code for water wheel parts in Brazil?
In Brazil, water wheel parts (HS 841090) is classified under NCM 8410.90.00.